在Spring Cloud架构下使用Spring Boot的Logback日志处理方案，可以按照以下步骤进行：

1.引入logback依赖

在pom.xml文件中添加以下依赖：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter</artifactId>
</dependency>

<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-classic</artifactId>
</dependency>

2.配置logback.xml文件

在src/main/resources目录下创建logback.xml文件，并添加以下配置：

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <property name="LOG_HOME" value="/path/to/logs"/>

    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>

    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${LOG_HOME}/app.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${LOG_HOME}/app.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <maxHistory>30</maxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>

    <logger name="com.example" level="DEBUG">
        <appender-ref ref="CONSOLE" />
        <appender-ref ref="FILE" />
    </logger>

    <root level="INFO">
        <appender-ref ref="CONSOLE" />
        <appender-ref ref="FILE" />
    </root>
</configuration>

其中，LOG_HOME为日志文件输出路径，可以根据需要进行修改。

3.logback.xml是Logback框架的配置文件，用于配置日志的输出格式、输出位置、日志级别等信息。

下面是logback.xml配置文件的主要内容：

3.1 配置输出位置

<property name="LOG_HOME" value="/path/to/logs"/>

3.2 配置输出格式

<encoder>
    <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
</encoder>

定义了日志输出的格式，包括时间、线程、日志级别、类名、日志信息等。

3.3 配置输出方式

<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
        <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
    </encoder>
</appender>

<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>${LOG_HOME}/app.log</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
        <fileNamePattern>${LOG_HOME}/app.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
        <maxHistory>30</maxHistory>
    </rollingPolicy>
    <encoder>
        <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
    </encoder>
</appender>

定义了日志输出的方式，包括控制台输出和文件输出。其中，文件输出使用了滚动策略，即以时间为基准，每天生成一个

4.在应用程序中使用日志

在应用程序中使用日志，可以使用以下方式：

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MyClass {
    private static final Logger logger = LoggerFactory.getLogger(MyClass.class);

    public void myMethod() {
        logger.debug("Debug log message");
        logger.info("Info log message");
        logger.warn("Warn log message");
        logger.error("Error log message");
    }
}

或者使用Lombok @Slf4j 注解 参考：https://blog.csdn.net/qq_20299791/article/details/89852458

5.logback.xml配置文件参考

<?xml version="1.0" encoding="UTF-8" ?>
<configuration scan="true" scanPeriod="3 seconds">
    <property resource="application.yml"/>
    <property name="LOG_PATH" value="/opt/log/"/>
<!--    <property name="LOG_PATH" value="/Users/changjiabo/opt/log/"/>-->
    <springProperty scope="context" name="appName" source="spring.application.name" defaultValue="ho-cc"/>
    <springProperty scope="context" name="env" source="spring.profiles.active"/>

    <!-- 输出到控制台 -->
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <Pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %highlight(%-6p) --- [%yellow(%15.15t)] [%X{requestId}] %cyan(%-40.40logger{39}) : %msg%n</Pattern>
        </encoder>
    </appender>


    <!-- 业务日志2 -->
    <appender name="flowlog" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <File>${LOG_PATH}${appName}/flowlog/flowlog.log</File>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${LOG_PATH}${appName}/flowlog/flowlog-%d{yyyyMMdd}-%i.log</fileNamePattern>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>30MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
            <maxHistory>10</maxHistory>
            <totalSizeCap>2GB</totalSizeCap>
        </rollingPolicy>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <Pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-6p --- [%15.15t] [%X{requestId}] %-40.40logger{39} : %msg%n</Pattern>
        </layout>
    </appender>


    <!-- 访问详细日志 -->
    <appender name="accDetail" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <File>${LOG_PATH}${appName}/accDetail/accdetail.log</File>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${LOG_PATH}${appName}/accDetail/accdetail-%d{yyyyMMdd}-%i.log</fileNamePattern>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>30MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
            <maxHistory>1</maxHistory>
            <totalSizeCap>1GB</totalSizeCap>
        </rollingPolicy>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <Pattern> %msg%n </Pattern>
        </layout>
    </appender>

    <!-- 需要上传elk日志 -->
    <appender name="logELK" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <File>${LOG_PATH}${appName}/metriclog/callCenter.log</File>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${LOG_PATH}${appName}/metriclog/callCenter-%d{yyyyMMdd}-%i.log</fileNamePattern>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>30MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
            <maxHistory>1</maxHistory>
            <totalSizeCap>1GB</totalSizeCap>
        </rollingPolicy>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <Pattern>%msg%n</Pattern>
        </layout>
    </appender>


    <!-- 打印 mybatis sql -->
    <logger name="com.wintelia" level="debug"/>


    <logger name="com.elk.aspect" level="info" additivity="false">
        <appender-ref ref="logELK"/>
    </logger>

    <logger name="com.accDetail.aspect" level="info" additivity="false">
        <appender-ref ref="accDetail"/>
    </logger>

    <!-- 开发环境 -->
    <springProfile name="dev,test">
        <logger name="com.wintelia" level="debug"/>
        <logger name="org.apache.catalina.startup.DigesterFactory" level="ERROR"/>
        <logger name="org.apache.catalina.util.LifecycleBase" level="ERROR"/>
        <logger name="org.apache.coyote.http11.Http11NioProtocol" level="WARN"/>
        <logger name="org.apache.sshd.common.util.SecurityUtils" level="WARN"/>
        <logger name="org.apache.tomcat.util.net.NioSelectorPool" level="WARN"/>
        <logger name="org.eclipse.jetty.util.component.AbstractLifeCycle" level="ERROR"/>
        <logger name="org.hibernate.validator.internal.util.Version" level="WARN"/>
    </springProfile>

    <springProfile name="prod,uat">
        <logger name="com.wintelia" level="info"/>
    </springProfile>

    <root level="info">
        <appender-ref ref="console"/>
        <appender-ref ref="flowlog"/>
    </root>

</configuration>